/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package it.unitn.science.matr155863_148346_145963.bccastestore.servlet;


import it.unitn.science.matr155863_148346_145963.bccastestore.DBManager;
import it.unitn.science.matr155863_148346_145963.bccastestore.items.Category;
import it.unitn.science.matr155863_148346_145963.bccastestore.items.Image;
import it.unitn.science.matr155863_148346_145963.bccastestore.items.Product;
import it.unitn.science.matr155863_148346_145963.bccastestore.utils.ProductDetailsValidator;
import it.unitn.science.matr155863_148346_145963.bccastestore.items.UM;
import it.unitn.science.matr155863_148346_145963.bccastestore.items.User;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.UnavailableException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.jstl.core.Config;
import javax.xml.ws.Response;
import org.apache.log4j.Logger;

/**
 *
 * @author berto
 */
public class AddProductSRV extends HttpServlet {

    private DBManager db;
    private static Logger log = Logger.getLogger(AddProductSRV.class);
    private static String destination_dir_path;
    
    @Override
    public void init(ServletConfig config) throws UnavailableException, ServletException{
        super.init(config);
        db=(DBManager)super.getServletContext().getAttribute("db_manager");
        destination_dir_path=getServletContext().getRealPath(
                                    config.getInitParameter("destionation_dir_path")
                                );
        if(destination_dir_path==null){
            throw new ServletException("Please supply destination_dir_path parameter");
        }
    }
    
    
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        HttpSession session=request.getSession();
        Product product=null;
        String errorOn=null;
        String address=null;
        try {
            product=ProductDetailsValidator.createProductMultypart(request,db,destination_dir_path);
            if(product!=null){
                try{
                    User user=(User) session.getAttribute("user");
                    product.setSellerId(user.getId());
                    product.setSellerName(user.getUsername());
                    Integer id=db.addProduct(product);
                    product.setId(id);
                    session.setAttribute("mess","The product added");
                    address="/contents/user/productDetails?id="+product.getId();
                    session.setAttribute("product", product);
                }catch(Exception ex){
                    session.setAttribute("error_message", "Unable to add the product.<br/>"+ex.getMessage());
                    address="/contents/public/errorPage.jsp";
                }
            }else{
                    session.setAttribute("error_message", "Unable to add the product.");
                    address="/contents/public/errorPage.jsp";
            }
        }catch(Exception ex){ 
            //Error diuring operation
            product=null;
            address="/contents/user/addProduct.jsp";
            errorOn=ex.getMessage();
            session.setAttribute("error_on", errorOn);
        } finally {    
            response.sendRedirect(request.getContextPath()+address);
        }
    }

    
    
    
    
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
